Fitted a 2.5Di from a 2000 MK5.
All wired up and working apart from the Temperature gauge.
I'm using the MK5 plastic Stat Housing and Switch.
Original was a single wire Temp Switch but the MK5 has a two wire switch. I'm assuming this is because it needs an earth being in the plastic housing.
I have the Connector Plug and bit of wiring from the MK5.
I've tried earthing the Black wire and connecting the White with Red Trace to the MK2's original single wire, which is also White/Red. Coincidence?
Anyway, gauge doesn't move and was working fine on original York Engine.
Any ideas?